For the inline types, the value of the segment is its body content. Whenever the include type, allows simple page include, the page-id of a page could be provided as the value.

This is the page id or URL, for the page to be included.

The inline type segment has its content (value) in the body. Whereas the include types are linked to their contents through the URL or expression in the value attribute.

The value entry is used to specify a file that is to be included.